fuel pressure

[esahuque]

Just a simple question.How long does your fuel pressure stay in the system before it goes down to 0 psi? I'm having hard start issues after it sits a few hours and I think it my be do to the fact that my fuel pressure leaks down to 0 psi in about 2 hours after I cut the car off.

[vancouverbc]

Just a simple question.How long does your fuel pressure stay in the system before it goes down to 0 psi? I'm having hard start issues after it sits a few hours and I think it my be do to the fact that my fuel pressure leaks down to 0 psi in about 2 hours after I cut the car off.

2 hrs sounds normal.

[vancouverbc]

zerothread/294958

[esahuque]

zerothread/294958

thanks, I already know how to do a leak down test. just didn't know how long the pressure should last. i have no leaks in the system, its not leaking back through the pump. its leaking through the NEW Sard FPR that i just installed and didn't know if that was normal for an after market FPR or not.

[esahuque]

OK, I ohm out the air regulator and I came up with 60.3 ohms on a cold motor, the fsm says it should be between 70 and 80 ohms. Does anyone know if that could cause a cold start issue?

compression test 160 across the board give or take a few psi.

also tested and cleaned tps IACV grounds to motor and chassis injectors for leaks timing ecu coolant temp sensor TB boost leak test vac leaks ecu for codes

Replaced: spark plugs wires cap and rotor fuel pump FPR fuel filter

I'm at the end end of my rope here, this has been a problem for about 6 months and going. I've tested and replaced everything that I could think of that controls cold start. Any other ideas would be greatly appreciated
Modified by esahuque at 10:04 AM 3/26/2009

[motoman399]

what is the air regulator? i am having a cold start problem too. mine has plenty of fuel cause thats all i smell. its for some reason cutting ignition only when its cold. after cranking for a little bit it starts and runs perfect. i also have a small vacuum leak under my intake mani but i dont think thats the problem. i pull 20 inches of vacuum at idle.

[vancouverbc]

look up AIR regulator in tutorials. should be in my signature